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Anatomy II > Lecture 22: Face Parotid Guttural Pouch > Flashcards

Lecture 22: Face Parotid Guttural Pouch Flashcards

1
Q

Muscles of facial expression innervated by what nerve

A

Can VII = facial

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2
Q

What are the 9 muscles of facial of expression

A

Sphincter Coli superficialis
Platysma
Orbicularis oris
Orbicularis oculi
Caninus
Lavator labii superioris
Levator nasolabialis
Parotidoauricularis
Buccinator

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3
Q

Orbicularis oris: function s (2)

A

Purses lips
Closes mouth

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4
Q

Orbicularis oculi function

A

Close eye

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5
Q

Levator nasolabialis functions (2)

A

Dilate nostril
Elevate and retract Rostral portion of lip

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6
Q

Levator labii superioris function

A

Elevate middle of upper lip

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7
Q

Caninus functions (2)

A

Dilate nostril
Elevates corner of mouth = snarling

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8
Q

buccinator function

A

Work with tongue to keep food on teeth

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9
Q

Parotidauricularis clinical relevance

A

Often damaged during surgeries draining external ear

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10
Q

3 layers of lips and cheek (outermost to innermost)

A

Skin
Muscle and connective tissue
Mucosa

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11
Q

Only significant distinction between lips and cheeks

A

Presence of oral orifice

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12
Q

Is masseter a muscle of facial expression

A

No

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13
Q

Masseter is a muscle of

A

Mastication

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14
Q

What determines relative size of cheeks and lips

A

Typical mouth function
Larger lips = open mouth wide

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15
Q

Parotid gland drains via

A

Long parotid duct

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16
Q

What muscle does parotid gland cross in carnivores

A

Masseter

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17
Q

Parotid duct path in larger animals

A

Deep to mandible —> crosses onto face with facial artery

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18
Q

Portion of facial nerve that innervates muscles of facial expression emerge from what foramen

A

Stylomastoid

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19
Q

Immediate course of facial nerve are embedded in what structure

A

Parotid gland

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20
Q

Branches of facial nerve (2)

A

Auriculopalpebral
Dorsal and ventral buccal

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21
Q

Auriculopalpebral nerve: branch of what nerve, path in face

A

From facial nerve
Crosses zygomatic arch to reach Rostral muscles of ear and muscles that close eyelids

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22
Q

Which of the facial nerve branches is often blocked for ophthalmic exams

A

Auriculopalpebral

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23
Q

Dorsal and ventral buccal nerves: branches of what nerve, innervates what muscles, path

A

Facial nerve
Goes to muscles of cheeks, lips and nostrils
Cross masseter

24
Q

Where does the external carotid artery divide into 2 terminal branches

A

Within parotid gland

25
Q

2 terminal branches of external carotid artery

A

Superficial temporal artery
Maxillary artery

26
Q

Blood supply to face is shared by (3)

A

External carotid artery
Superficial temporal artery
Maxillary artery

27
Q

Facial artery: parent artery, path, supplies what 2 structures

A

External carotid
Deep to mandible before emerging on face
To cheeks and lips

28
Q

2 branches of maxillary artery

A

Infraorbital
Mental

29
Q

Mental artery (branch of maxillary) emerges from what foramen

A

Mental

30
Q

Transverse facial artery: parent artery

A

Superficial temporal artery –> external carotid

31
Q

Which artery crosses onto face from deep side of mandible at the BORDER of masseter’s insertion

A

Facial artery

32
Q

Which artery crosses the SUPERFICIAL surface of Masseter just ventral to zygomatic arch

A

Transverse facial artery

33
Q

Deep facial veins has connection to what superficial vein

A

Maxillary vein

34
Q

3 possible venous connections that are potential infection pathways from surface of cranial cavity

A

Deep facial vein
Buccal veins
Anastamoses with ophthalmic veins

35
Q

Functions of deep facial vein/buccal veins/Anastamoses with ophthalmic veins

A

Regulate blood temperature in brain
Blood flow away from head in grazers

36
Q

Linguofacial vein formed by union of

A

Facial and lingual veins

37
Q

Which vein is the primary drainage for many of deeper head and neck regions

A

Maxillary

38
Q

What 2 veins form the external jugular vein

A

Maxillary
Linguofacial

39
Q

Sensory innervation of the face is shared by

A

All 3 divisions of trigeminal (V1, V2 and V3)

40
Q

V1/ophthalmic nerve: sensory innervation to face (3)

A

Orbit
Forehead
Parts of dorsal nose

41
Q

V2/maxillary nerve: sensory innervation to face (3)

A

Nose
Upper cheek
Lateral head cranial to ear

42
Q

CN V3/mandibular: sensory innervation to face (5)

A

Mandible
Lower cheek
Chin
Temporal region
Ear

43
Q

2 branches of V1/ophthalmic nerve

A

Frontal
Infratrochlear

44
Q

Frontal nerve: parent nerve, 2 branches, sensory supply to

A

V1/ophthalmic
Supraorbital and supratrochlear branches
Upper eyelid and caudodorsal nose

45
Q

Infratrochlear nerve: parent nerve, sensory supply to

A

V1/ophthalmic
Small area of nose medial to orbit

46
Q

2 branches of V2/maxillary nerve

A

Infraorbital
Zygomatic

47
Q

Infraorbital nerve: parent nerve, path/emerges from what hole, sensory supply to

A

Maxillary/V2
Emerges from Infraorbital foramen
Nose, upper lip, lower eyelid, upper cheek

48
Q

Zygomatic nerve: parent nerve, sensory supply to

A

Maxillary/V2
Skin of lateral face cranial to ear

49
Q

Which branch of V2/maxillary is the primary sensory nerve to HORNS in cattle

A

Zygomatic

50
Q

2 branches of V3/mandibular

A

Mental
Buccal

51
Q

Mental nerve: parent nerve,emerges from what hold, sensory supply to

A

Mandibular/V3
Mental foramina
Skin of Rostral mandible

52
Q

Buccal branch of mandibular/V3 supplies

A

Sensory to cheek

53
Q

Guttural pouch is specific to what species

A

Horses

54
Q

Guttural pouch: definition, importance

A

Large blind pouch on caudolateral side of face coming from auditory tube
Contacts many important structures (cranial nerves, vessels)

55
Q

5 structures in contact with guttural pouch

A

Stylohyoid bone
External carotid artery
Glossopharyngeal nerve
Vagosympathetic trunk
Hypoglossal nerve

56
Q

What happens if drainage of guttural pouch is blocked (3 clinical complications)

A

Fracture of stylohyoid and difficulty moving tongue
Lesion of vagus/glossopharyngeal = difficulty swallowing
Lesion of sympathetic chain = sympathetic deficits like Horner syndrome e

Anatomy II (36 decks)

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